package com.project.dao.impl;

import java.sql.*;

public class BaseDao {
    //连接对象
    protected Connection con;
    //SQL语句执行对象
    protected PreparedStatement ps;
    //结果集
    protected ResultSet rs;

    //建立连接
    public void setConnection(){
        try {
            Class.forName("com.mysql.jdbc.Driver");
            this.con= DriverManager.getConnection("jdbc:mysql://localhost:6789/db?characterEncoding=utf-8",
                    "root","lovo");

        } catch (Exception e) {
            e.printStackTrace();
        }
    }

    //关闭连接
    public void closeConnection(){
        try {
            if (rs!=null){
                rs.close();
            }
            if (ps!=null){
                ps.close();
            }
            if (con!=null){
                con.close();
            }

        } catch (SQLException e) {
            e.printStackTrace();
        }
    }
}
